Transmission-gearing for motor-vehicles.



4 0. SOHMIDT.

TRANSMISSION GEARING FORH MD'OR VEHIC LES.

APPLICATION FILED PR. 28, 1904.

.Patented Jan. 2, 1912.

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' SCHMIDT. TRANSMISSION, GEABING FOR yMOTOR VEHIIQL. AMJLJQAMQN P JLED APR. 23,1904.

1,01 3,4750. llpgmggd Jan. 2, 1912.

UHU ""i l! l fh j *if I* I I C. SCHMIDT.- TRANSMISSIONGBARING PoR MOTOR vlE. APPLICATION FILED APR. 28, 1904. 1,01 3,450. Patented JmL-2, 1912.

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UNITED sTATEsL PATENT oEEICE.

CHARLES sCHMIrT, oF DETROIT, MICHIGAN, AssIGNoiaVBY MEsNE ASSIGNMENTS, To PACKARD Moron CAR COMPANY,A or DETROIT, MICHIGAN, A CORPORATION .or

MICHIGAN TEANsMIss1oNGEAmNG Fon Moron-VEHICLES.

.Patented Jan. 2,1912.

' pplication filed April 28, 1904. Serial No. 205,325.

To all whom 'it may concern.'

Be it'known that I, CHARLES SCHMIDT, a citizen of France, residing in the city of Detroit, county of Wayne, and State of Michigan, have invented certain 'new and useful Improvements in Transmission-Gearing for Motor-Vehicles, of which the following is a specification. i

The present invention relates to various A'improvements in transmission gearing for motor vehicles and more especially4 to a transmission gearing which'is located adjacent to and directly geared with the rear axle.

The invention will be described in detail in connection with the accompanying drawings, in which,

Figure 1 is 'a horizontal section through the rear axle and the gearing; Fig. 2 is an end view looking from the front of the machine; Fig. 3 is a `side view of part lof Fig. 2; Fig. Ltis a view showing the interlocking device for preventing operation of the reverse gear while the forward speed gears are in mesh; Fig. 5 shows the'interlocking slice in engagement with the larger shifting gear; and Fig. shows the interlocking shoe in engagement with the smaller shifting gear. y

The present invention comprises various improvements in the gearing which is the subject matter of my pending application, Serial Number 162,631, filed June 22, 1903.

Referring to the drawings, 1, 2 indicate the two sections of the driving axle. These sections are suitably connected by differential gearing Il which is driven by a beveled gear 4. The gear 4 is supported on a casing 5 which iiicloses the differential gears and which has two diametrically opposite sleeves, 7`wliicli form bearings for the driving axle sections. The casing 5 and the sleeves (l, T generally turn with the driving axle and they are supported in ball bearings 8, t) Within a .fixed frame or casing 1t). Threaded on the sleeve G is a ring 11 which serves to adjust the differential gearing relatively to the ball bearings, the ring bearing against an angular hearing ring 12 which forms a part of the ball races. On the sleeve 7 is :mother threaded adjustablering Il which bears against an angular ring 14. The ring 14 is supported on. three sets of balls, as more fully described in said previous applicationu By means of the threaded rings 11 and 13 the differential gearing `may be properly'adjusted with respect to the'transinission gfaring and may also be :adjusted tol take up wear ofthe beveled ars. y

`Adjacent to land suitably connected tothe fixed casing 10 is another casing 15 adapted to support and inclose the transmission gearing. A driving shaft 16, suitably connected v both external and internal teeth and on the opposite end of the sleeve is lixed a bevel gear 21 which is in mesh wit-h the beveled gear 4 which drives the differential gears.

The gears 20 and 21 and the shaft 18 'are carried by a ring 22 which is threaded and adjustable in an opening in the end of the casing. The shaft 18 turns in the ring 22, preferably in ball bearings 19, and the gear 21 has a bearing .on the end of said ring, also preferably a be bearing as shown at 23. This 4construction is very convenient;l both for assembling the machinery and for afterward adjusting the gear 21 properly to tlie gear 4. The ring 22 and the gears 20 and 21 are assembled and suitably adjusted with relation to .each other outside of the casing and are then collectively adjusted in the casing by screwing the ring 22 into the circular opening. This is effected by passing a key or spanner or othei` suitable device through suitable openings in the gear 20 andrinto'one or more openings in the ring 22. The ring 22 may be held in any desired adjustment by a set screw or other suitable device, and the shaft, it will be observed, is held against endwise movement. in the ring.

ln the casing 15 is a counter shaft 24, which is preferably supported in ball bearings. gears 25, 26, 27, of different diameters and all locked to said shaft. The gear 25 is in niesn with the external teeth of tlic'gear 20.

Two eonnected gears 2S, 29 of different sizes are mounted to slide on and turn with tliesliaft 1t?. AsA shown these. gears are upon an angular portion of said shaft. The

Upon the 'counter shaft are three v gen129 is dap'l'ed 'to mejelivfi'fli the gear 26 'Whenbroiig'rht t'register Willi it und the genr28 i s likewise adapted to inesli with the gerQT. The genre 28,`f29 ai'e "nrranged to is provided with afeeriof ennular grooves .32eme 3..,Sp1lne., e

shown consists of ay ball which is 'pressed by afepringyebinclosediino oep 35.; The inne Vend of rodl fstiened; and guided i-bv fixed pin vvhiclr,enljersgan; nxial The different forward :are obigiined Ymoved in toanesnm-'ith the internalieeizhjof when tlielslidinggenr-s28, 29 are exatly in 45.,.thef;pe01)er;.reeim-fiban-isf beweeg vthe gears 26431141727: and notininesh with either sion 4:3 iseerriedbyLlie-arm 3131i; shoe projets beyond the reverse gear 3 7 find-.pre-v v .v en`t s lit'.. frpm.engagingxvith 4the* geen 28 a whenhlz is-j'nobprol'ierly registered therewith.V

A When-,the gear 28.15.111 proper posit-ion .for 'egement ,with Uiereverse gear the shoe gizooyfe, lo.e tvveen gears. ;Sfand- 2 9. To perrot ig feo enter .s a'id groove freely one4 arm-of @the iff iue reverse lever operated While .the eline 43his`oppositethe gear 29 its surface 44 AWill l s trilce seid gear end'prevene engage. l y 4 4; eargend i thereverse leitelin cooperates with ...andia slxoe ino vs.ble witli adapted toenterseld groove 'when the sllding geareare imposition for reverslng, and

out jof; position 4for reversing. y

liregister with and enter .theannuler 'oke 3Q; Shorter than the" other Aernn.

supported on seid casing, y

gerugfor drlvmgvthevirst n-rzzied bevel gear,

interlocking device is edeplzed4 to' absolutely prevent the reverse gear from beingthrown.

into operation While the maohineis running et 'any of tlieforword speeds'or'while the forward Speed gears are'in mesh. The strip ping of gearsor any sudden reversal of the movement of `the vehicle is thus prevented.

Having thus fully described my inven tion Wliat-v I claim and desire tdecureby- Lettere Petentg-is :L-

l. In a, motor vehicle, the combination of af shaft, a driving gear.'wheel-thereon,.a

drivenshaft;. differential gearingthereon, a

driven geerfWhe'el-eonnected to the dierenvtialgearing, e :casing containing said -geir Wheels, a. ring .lialving screw thread connectlon'wlth said casing and in whiehthe said slmftis revolubly held means on adjustinnr seid ring in.eziidasing'andi-meansifor adjusting `the; driven gear on ,the ldrivenA .2, iii a motorvelnele, the ,combination -with :two lseriesY of relatively movable geen,

and n. reverse gear adapted to connect .a

.gear olone series;` with e gear ofhe other, o t '.xneans. movable Wlth .the A.reverse gear .to

prevent.1in-.from reaching operative position when :my of the forward speed gears .are

with a pair -ofsliding gears having en .intermedia-ie annular groove 'of a, reverse gear to conftest with said gears when they are In a motoruvehicld libe leombinition with. variable Speed gears, of a4 reversergeer,

a rocking arm carrying seid reverse gear and toggle leversffor.roekingeaid firm. 6. In r:emotoi veniele, the combinatlon with varieblespeed gears endfa. -ba'ckin q gear, of. n' rocking .arm .upon which sai backing gear is mounted, und a Shoe .carried bysaid zirn'i. and. provided with surfaes 44, .45 for zenga g1 ng with *he variable speed ears ;iyith the two-parti driving axle sind fthedifferentlal 'gearmg? ofa casing .s orround1ng; sind. gearing .und .rovlded rmtr extensions ,Second bevel -seid [gearA fendt to .preventthe' backing gear .from inter fxngiherewitn exceprmg .when saidvarlable said differenti-a1 gearing for driving the latter, a second bevel gear for driving the first named bevel gear, rotatable adjusting rings for adjusting each of said'bevel gears with respect to the other, and means for locking Said rings in`--any desired adjustment.

9. In a mot0\.1vehicle, the `combination with the tWo-pa'rtdriving axle, the differential gearing, the bevel gear connected to --said differential gearing for driving the latter, a seeond bevel gear fordriving the rst threaded adjust-ing rings named bevel gear, foradjustingeach of said bevel gears with respect to the other, and means for locking said rings in any desired adjustment.

l0. In a motor vehicle, the .combination with a two-part driving axle, the differential gearing, va housing therefor, a bevelgear onthe diiferentialhousing for driving the latter, a second bevel-gear for driving the first named bevel-gear,rotatable adjusting rings for adjusting each of said bevelgears with respect to the other, and means for locking said rings in any desired adjustment.

11. In a lnotor vehicle, in Combination with the variable speed gearing, a casing, a shaft driven by said gearing, a gear on said shaft and driven thereby, a ring :provided with a bearing and having threaded en gagement Wit-h an opening in said casing, and said shaft and gear being adapted to be moved through said opening into said casing when said ring is disengaged therefrom.

In testimony whereof I have signed my naine to this speeification in the presence of two subscribing Witnesses.

. CHARLES SCHMIDT. Witnesses:

RUSSELL Hnrr, HENRY B. JOY. 

